Which of the following controller functions allows uncommitted writes to be protected during storage controller failover in a dual controller array?

Cache mirroring ensures that data residing in one controller's cache is simultaneously written to the other controller's cache in a dual-controller array. This allows the standby controller to take over with all uncommitted writes preserved during a failover event, preventing data loss for operations not yet committed to permanent storage.

Battery backed cache protects data in cache during a power failure, not specifically during a controller failover between two operational controllers.

Cache de-staging is the act of writing cached data to persistent storage, which happens during normal operation, not a specific failover protection mechanism itself.

Cache re-initialization resets the cache and would result in the loss of any uncommitted writes rather than protecting them.